Crosstalk Between Auxin Signalling and Growth Regulating Factor 5: Implications for Chloroplast Division and Leaf Development
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F25%3A00637640" target="_blank" >RIV/61389030:_____/25:00637640 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14740/25:00143869 RIV/61989592:15310/25:73634636
Result on the web
<a href="https://doi.org/10.1111/ppl.70315" target="_blank" >https://doi.org/10.1111/ppl.70315</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/ppl.70315" target="_blank" >10.1111/ppl.70315</a>
Alternative languages
Result language
angličtina
Original language name
Crosstalk Between Auxin Signalling and Growth Regulating Factor 5: Implications for Chloroplast Division and Leaf Development
Original language description
Chloroplasts are the sites of photosynthesis but also host essential metabolic and biosynthetic pathways, therefore, the regulation of the chloroplast population is of crucial importance for the viability of the plant. Chloroplast division is closely linked to leaf development, but the coordination of cell expansion, division, and chloroplast multiplication at the molecular level is still poorly understood. Auxin signalling influences leaf growth and may also mediate chloroplast biogenesis and proliferation. Most studies focused on auxin and the development of chloroplasts in the fruit, emphasising the need for further research on leaf tissue. Overexpression of Growth Regulating Factor 5 (35S:GRF5) increases cell and chloroplast division in Arabidopsis thaliana, resulting in larger leaves with more chloroplasts per cell. In this study, we utilised 35S:GRF5 plants as a model to identify auxin control points that regulate chloroplast division. By examining the impact of changes in auxin homeostasis on chloroplast division and mesophyll cell size and by analysing crosses with selected auxin homeostasis genes, we found that reactive oxygen species-auxin crosstalk influences chloroplast multiplication during the cell expansion phase. Evidence indicates that GRF5 modulates auxin responsiveness by regulating the expression of UDP-glucosyltransferase UGT74E2 and PIN-LIKES3/5, which are key players in intracellular auxin homeostasis. These findings provide potential targets for modulating chloroplast abundance to improve photosynthetic efficiency in crops and highlight key areas for further research.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10611 - Plant sciences, botany
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physiologia Plantarum
ISSN
0031-9317
e-ISSN
1399-3054
Volume of the periodical
177
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
e70315
UT code for WoS article
001504425300001
EID of the result in the Scopus database
2-s2.0-105008285363